Medicament-dispensing cartridge



De@ 9 1930. H. s. cooK 1,783,956

MEDICAMENT DISPENSING CARTRIDGE Original Filed July 1, 1921 PatentedDec. 9, 1930 UNITED STATES PATENT OFFICE HARVEY S. COOK, 0F VALPARAISO,INDIANA., ASSIGNOB TO COOK LABORATORIES, INC.,

A CORPORATION 0F DELAWARE Original application filed July 1, 1921,Serial No. 481,997. Divided and this application led December 20, 1926.Serial No. 155,838.

This invention relates to sealed medicament-dispensing containers orso-called cartridges for use in a hypodermic syringe of the type inwhich such a cartridge is embodied as a separable element adapted tobecollapsed to expel its contents through a canula piercing the cartridge.

The subject of the in-vention is a collapsible cartridge of the pluggedtube type embodying certain features originally disclosed in myco-pending application led July 1, 1921, Ser. No. 481,997, of which thisapplication is a division; the said cartridge embodying a genericinvention more broadly claimed in said original application.

In the drawings:

Fig. 1 is a side elevation of a cartridge embodying the invention;

Fig. 2 is a longitudinal section thereof;

Fig. 3 shows a cartridge in association with the canula and plunger of asyringe-like instrument with which the cartridge is intended to becombined;

Fig. 4 shows the cartridge collapsed.

The cartridge embodies a rigid tube 5 of substantially uniform bore.This may be a section of commercial glass tubing, which,

though ordinarily having irregularities inA bore, ma be considered as ofsubstantially uniform ore in the sense of a straight bored tube throughwhich a resilient plug may be pushed. Sealing closures are provided byelastic Stoppers 6 and 6, which are preferably of molded rubber, fittedtightly in opposite ends of the tube. In use in an injectthe canula andplunger of a syringe-like instance the plug 6, 1s pierced axially by acanula, represented in Fig. 3 by the double pointed hypodermic needle 9;and the other plug 6a is adapted to be pushed by the plunger 10 throughthe tube to expel the contained anesthetic or other medicament solutionthrough the canula. a thick walled Cupshaped plug With its cavity facingoutward. The cavity provides the thick Walled annular portion 7 andclosed or imperforate thick walled inner end portion 8, which is ofreduced thickness at the central part of the plug. This cup-shaped plugprovides a substantial length of exte- The plug 6 is shown as' riorcylindric surface in tight frictional engagement with the tube and ofsubstantially re uced axial thickness to be pierced by the canula, thusfacilitating the piercing operation. While the inner im erforate wall 8pierced by the canula is thin 1n relation to the length of the plug, itis of such substantial thickness as to enable the compressed stopper toform an effectual seal around the canula.

Before using the cartridge, the practitioner may pour an antise ticfluid into the cavity of the plug and after a few moments pour out thefluid and then immediately pierce the plug so sterilized with a sterilecanula.

As both plugs 6 and 6EL are substantially alike in the illustrativeembodiment of the invention shown in the drawings, either may in thisinstance serve as the plug to be ierced or as the piston plug to beforced into or through the tube to collapse the cartridge. When thisform of plug with its cavity facing outward is use as a piston plug, itwill be seen by reference to Fig. 3 that when the plug 1s forced in bythe syringe plunger l0 the annular wall of the plug will be compressedand thereby forced tightly against the inner end of the tube and conform'to irregularities in the bore of the tube during the ejecting action,promoting maintenance of a good seal.

I claim as my invention:

1. A cartridge for hypodermic syringes comprising a sealed li uidcontainer embodying a ri d tube olf substantially uniform bore anstoppers in opposite ends of the tube, said Stoppers comprisingsubstantially cup-shaped thick walled plugs of resilient materialarranged with their cavities facing outwardly, said plugs adapted one tobe pierced by a canula and the other to be forced through the tube toexpel its contents arran ed with their cavities facing outward- 1 eiterof said lugs adapted to be forced through the tu e to ex el its contentstlllrough ak canula thrust t rough the other p ug.

3. A cartridge for hy odermic syringes comprising a sealed'me icamentcontainer embodying a rigid tube of substantially uniform bore, havingin one end a sealing c10- sure to be pierced by a canula, and having inits opposite end a piston plug comprising a thick walled cup-shapedstopper of resilient material arranged with its cavity outward andpresenting a thick Walled tubular flexible outer end portion to beengaged by a plunger to push the piston plug through the tube.

In testimony whereof, I have signed my name to this specification.

HARVEY S. COOK.

arran ed with their cavities facing outwardl eit er of said lplugsadapted to be forced through the tu e to ex el its contents through acanula thrust t rough the other 3.gA cartridge for hy odermic syringescomprising a sealed' me icament container embodying a rigid tube ofsubstantially uniform bore, havln in one end a sealing c10- sure to bepierce by a canula, and having in its ogposite end a piston plugcomprlsing a t 10k walled cup-shaped stopper of resilient materialarranged with its cavity outward and presenting a thick walled tubularexible outer end .portion to be engaged h a plunger to push the pistonplug through t e tube.

In testimony whereof, I have signed my name to this specification.

HARVEY S. COOK.

CERTIFICATE OF CORRECTION.

Patent No. 1,783,956. Granted December 9, 1930, to

HARVEY S. COOK.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page l,line 36, strike out the words "the canula and plunger of a syringe-like"and insert instead ing instrument, one of these plugs, for; and that thesaid Letters Patent shouldlbe read with this correction therein that thesame may conform to the record of the case in the Patent Office.

S igned and sealed this 17th day of February, A. D. 1931.

M. J. Moore,

(Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,783,956. Granted December 9, 1930, to

HARVEY S. COOK.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page l,line 36, strike out the words "the canula and plunger of a syringe-like"and insert insteading instrument, one of these plugs, for; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office.

S igned and sealed this 17th day of February, A. D. 1931.

M. J. Moore, (Seal) Acting Commissioner of Patents.

